EFR4001IP
12720-0713-00
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7.13 Analogue outputs function
The 0/4 … 20 mA current output can be optionally used as either a transducer (measurement converter) for
power or as a control output.
A single phase or even the sum of all phases (added up together) is evaluated/controlled.
The 0/2 … 10V voltage output can be optionally used as either a transducer (measurement converter) for
power or as a control output.
A single phase or even the sum of all phases (added up together) is evaluated/controlled.
Function
Single phase
Sum of all phase
Transducer (measurement
converter)
kW-L1 / kW-L2 / kW-L3
kW-L123
Control output
Load-L1 / load-L2 / load-L3
Load-L123
Requirements for the controller:
- The control must be linear since the regulated power is used to calculate the switching points
- The control must be made with phase control or trailing-edge control
(wave packet control and multicycle control are not supported)
The configured set point value, e.g. +0.1 kW = 100 watts delivery (import = purchase) is regulated
If consumers are connected to Relays K1…3, the power triggered by the controller is taken into consideration
when switching in the relay. Consumers are switched on as soon as there is adequate power. At the same
time, switch-on and switch-off points and times programmed for the relays are taken into account.
If the device detects a failure of the load controlled with the analogue output (deviation from the setpoint >
control tolerance), the triggered power is not taken into account when switching in K1…3.
Example:
Load connected to controller = 1 kW (at 20 mA / 10V)
Controller set point = 0 kW (no delivery (import = purchase) and no infeed (export))
Power connected to Relay K1 = 0.5 kW
Switch-on point K1 = -0.1 kW (= infeed 100 Watts)
The load on K1 is switched on as soon as the power controlled by the controller is so high (-0,6kW) that the
switch-on point or K1 (-0,1kW) is reached after switching on the load (0.5kW).
This is the case with 0,6kW of regulated power (= 60% of the 1kW = 12mA / 6V at the output). The controller
then tries to regain the setpoint under the new load conditions. This is also applying to the relay K2 and K3.
As soon as the set switch-off point is reached, the load on K1 is switched off.
7.14
Function of the digital inputs PR1…4
The EFR4001IP has 4 digital inputs for potential-free normally open contacts. That permits selectively
switching each output relay on or off at any time. Consumers can therefore be blocked or switched on with
external control. Y4 overwrites Y3, Y3 overwrites Y2, Y2 overwrites Y1.
Function examples:
•
Heating element, shut-down by an external thermostat when the temperature is reached
•
Heat pump, off periods through timer
•
Priority control, washing machine remains on until it is finished
•
Charge E-auto at fixed time
•
Generate hot water on demand
In addition, the analog outputs, when used as a control output, can be switched to 100% or 0%.
7.15 Function of the
digital inputs
PR5…8
If one of the output relays K1 … K3 Auto Reset > off is set, the respective relay remains switching off after a
shutdown until a manual reset is carried out. In programs 5, 6, 7 and 8 the
digital inputs Y1 … Y4 have the
function of an external reset. A locked release can thus be deleted externally (button or switch). The function
is equ
ated with a reset by the device button. If one of the digital inputs Y1 … Y4 remains permanently closed,
a locked trip will be deleted immediately, so the device automatically switches on again.
